A new candidate appliance firmware version is available. Firmware MX 18.208 was just released on 2024-02-13 and has been in this firmware category since 2024-02-13.
USB modems with MX/Z series devices running firmware MX 18 or newer will be limited to best effort support and will not be receiving any future firmware fixes or improvements.
What's new
Significant performance improvements for MX85, MX95, and MX105 appliances.
Bug fixes
Resolved an issue that resulted in Event Log data not being generated for all clients of MX75, MX250, and MX450 appliances.
Corrected a rare issue that could result in large numbers of routes causing network instability during AutoVPN connectivity changes.
Fixed an issue that could result in some clients being unable to access WAN resources when MX75, MX250, or MX450 appliances were configured with a PPPoE uplink.
Fixed an issue that resulted in MX appliances failing to initialize a service required for encrypted communication with Umbrella.
Resolved a rare issue that could result in SFP+ ports on MX250 and MX450 appliances unexpectedly toggling between up and down states when forwarding incorrectly sized MDNS packets.
Corrected an issue that could result in IPv6 dynamic prefixes from WAN1 not being installed into the MX routing table.
Fixed a rare issue that could result in AutoVPN traffic being routed incorrectly after an uplink failover or failback when 1) the MX appliance was configured to operate in High Availability mode (HA), 2) a virtual IP address was used, and 3) a teleworker VPN was configured.
Resolved an issue that resulted in MX68(W,CW) failing to negotiate PoE power at 802.3at
Corrected an issue that resulted in Z4(C) appliances being unable to change to a DFS channel after having previously used a non-DFS channel.
Fixed an issue that resulted in MXs appliances incorrectly modifying the source IP address of ICMP time-to-live exceeded messages when routing them between VLANs.
Additional changes to increase the robustness of connectivity and self-recoverability for integrated cellular modems.
Corrected an issue that could result in reduced performance on MX75, MX85, and MX95 appliances when IDS or IPS was enabled.
Fixed an issue that could result in MX appliances failing to populate the ARP table live tool.
Resolved an issue that resulted in MX appliances failing to receive an IP address on its WAN interface when DHCPv6 over a PPPoE uplink was used.
Corrected an issue that could degrade the performance of traffic destined to and sourced by MX appliances when 1) IPv6 was enabled, 2) BGP was enabled, and 3) there were over 1024 AutoVPN peers.
Resolved an MX 18.2 regression which caused MX appliances to summarize AutoVPN routes advertised through BGP without being configured to do so.
Legacy products notice
When configured for this version, Z1 devices will run MX 14.56.
When configured for this version, MX400 and MX600 devices will run MX 16.16.9.
When configured for this version, MX64(W), MX65(W), MX84, MX100, and vMX100 devices will run MX 18.107.8.
Known issues status
This list is being reviewed and updated. Many existing issue reports have not been confirmed to affect MX 18.2XX firmware versions.
Known issues
There is an increased risk of encountering device stability and performance issues on all platforms and across all configurations.
Other
Control traffic for Meraki authentication will now only be routed out the WAN interface(s). Previously it could be unintentionally directed out other interfaces, based on the routing configuration.
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